Image Forming Apparatus, Method, and Computer-Readable Storage Medium for Forming Images on Recording Media Such as Paper Having Different Sizes

1. An image forming apparatus comprising: a receiving unit configured to receive image data and a first recording medium size; a determining unit configured to determine whether there is a recording medium having a size matching the first recording medium size accessible to the image forming apparatus; and an image forming unit configured to form an image of the image data, the image having been divided so that different portions of the image that are less than an entirety of the image are formed on a plurality of recording media having a second recording medium size smaller than the first recording medium size, without changing a size of the image, wherein the image forming unit forms the image in response to a determination by the determining unit that there is no recording medium having the first recording medium size accessible to the image forming apparatus, wherein the second recording medium size is 1/N the first recording medium size, where N is a natural number greater than or equal to two, and wherein the image forming unit forms the different portions of the image at predetermined positions on the N recording media having the second recording medium size so that, when the N recording media having the second recording medium size are arranged side by side, the image formed by the N recording media is the same as the image that would be formed on a single recording medium having the first recording medium size.

2. The image forming apparatus as claimed in claim 1 , further comprising: a storage unit configured to store recording medium sizes of the recording media accessible to the image forming apparatus.

3. The image forming apparatus as claimed in claim 2 , wherein the second recording medium size is registered in advance and prestored in the storage unit.

4. The image forming apparatus as claimed in claim 1 , further comprising: a supply unit configured to accommodate a plurality of recording media having different sizes, wherein the determining unit determines whether the supply unit accommodates the recording medium having the first recording medium size.

5. The image forming apparatus as claimed in claim 1 , further comprising: a setting unit configured to set whether or not the image forming unit forms the image by forming the different portions of the image on the N recording media having the second recording medium size.

6. An image forming method for forming images on recording media in an image forming apparatus, comprising: receiving, by the image forming apparatus, image data and a first recording medium size; determining, by a determining unit of the image forming apparatus, whether a recording medium having the first recording medium size is accessible to the image forming apparatus; and forming, by an image forming unit of the image forming apparatus, an image of the image data, the image having been divided so that different portions of the image that are less than an entirety of the image are formed on a plurality of recording media having a second recording medium size smaller than the first recording medium size, without changing a size of the image, wherein the forming is executed in response to a determination by the determining that there is no recording medium having the first recording medium size accessible to the image forming apparatus, wherein the second recording medium size is 1/N the first recording medium size, where N is a natural number greater than or equal to two, and wherein the image forming unit forms the different portions of the image at predetermined positions on the N recording media having the second recording medium size so that, when the N recording media having the second recording medium size are arranged side by side, the image formed by the N recording media is the same as the image that would be formed on a single recording medium having the first recording medium size.

7. The image forming method as claimed in claim 6 , further comprising: storing recording medium sizes of the recording media accommodated within the image forming apparatus in a storage unit.

8. The image forming method as claimed in claim 7 , wherein the storing prestores the second recording medium size that is registered in advance in the storage unit.

9. The image forming method as claimed in claim 6 , wherein the determining determines whether a supply unit of the image forming apparatus, accommodating a plurality of recording media having different sizes, accommodates the recording medium having the first recording medium size.

10. The image forming method as claimed in claim 6 , further comprising: setting whether or not the image forming unit forms the image by forming the different portions of the image on the N recording media having the second recording medium size.

11. A non-transitory computer-readable storage medium having stored therein a program for causing a computer of an image forming apparatus to form images on recording media, comprising: receiving image data and a first recording medium size; determining whether a recording medium having the first recording medium size is accessible to the image forming apparatus; and controlling an image forming unit of the image forming apparatus to form an image of the image data, the image having been divided so that different portions of the image that are less than an entirety of the image are formed on a plurality of recording media having a second recording medium size smaller than the first recording medium size, without changing a size of the image, wherein the image forming apparatus forms the image in response to a determination by the determining that there is no recording medium having the first recording medium size accessible to the image forming apparatus, wherein the second recording medium size is 1/N the first recording medium size, where N is a natural number greater than or equal to two, and wherein the image forming unit forms the different portions of the image at predetermined positions on the N recording media having the second recording medium size so that, when the N recording media having the second recording medium size are arranged side by side, the image formed by the N recording media is the same as the image that would be formed on a single recording medium having the first recording medium size.

12. The non-transitory computer-readable storage medium as claimed in claim 11 , further comprising: storing recording medium sizes of the recording media accommodated within the image forming apparatus, including the second recording medium size, in a storage unit.

13. The non-transitory computer-readable storage medium as claimed in claim 11 , wherein the determining determines whether a supply unit of the image forming apparatus, accommodating a plurality of recording media having different sizes, accommodates the recording medium having the first recording medium size.

14. The non-transitory computer-readable storage medium as claimed in claim 11 , further comprising: setting whether or not the image forming unit forms the image by forming the different portions of the image on the N recording media having the second recording medium size.